We protect our children from drug dealers and pedophiles and all other sort of lowlifes. We lock our doors of our homes. We are to be vigilant against evil and take precautions to prevent it. We will keep our car keys on our person, we do not leave them in the ignition switch saying I have trust. We do what we can so we do not become sick. We do preventative measures for our safety.
More:
http://www.letusreason.org/Doct40.htm